Singapore haze hits "very unhealthy" range

The hazy condition is expected to persist today with the 24-hour PSI potentially in the mid to high sections of the very unhealthy range. SINGAPORE : The haze in Singapore continues to worsen today hitting the "very unhealthy" level despite some improvement earlier following light showers on Monday night. This is due to prevailing winds blowing from the south-southwest, bringing denser haze from Sumatra towards the island republic. As at 12 noon Tuesday, the 24-hour pollutant standard index (PSI) read as 162 to 214, in the mid unhealthy and low range of very unhealthy, while the three-hour PSI was 227, according to the National Environment Agency. The hazy condition is expected to persist today with the 24-hour PSI potentially in the mid to high sections of the very unhealthy range.